package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.context.properties.bind.BindResult;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**

 * @author  ub
 * @create  2021/3/5 18:54
 * @desc 统一异常

 **/
@Slf4j
@RestControllerAdvice("com.atguigu.gulimall.product.controller")  // 开启统一异常处理
public class GulimallExceptionControllerAdvice {

    @ExceptionHandler(value= MethodArgumentNotValidException.class)
    public R handleAdviceException(MethodArgumentNotValidException e) {
       log.error("数据校验出现问题:{},异常类型:{}",e.getMessage(),e.getClass());
       BindingResult bindResult = e.getBindingResult();
       List<FieldError> fieldErrors = bindResult.getFieldErrors();
       Map<String,String> errMap = new HashMap<>(fieldErrors.size());
       fieldErrors.forEach(fieldError-> {
           errMap.put(fieldError.getField(),fieldError.getDefaultMessage());
       });
       return R.error(BizCodeEnume.VAILD_EXCEPTION.getCode(),BizCodeEnume.VAILD_EXCEPTION.getMsg()).put("data",errMap);
    }

    @ExceptionHandler(value= Exception.class)
    public R handleException(Throwable throwable) {
      log.error("系统异常:{}",throwable);
      return R.error(BizCodeEnume.UNKNOW_EXCEPTION.getCode(),BizCodeEnume.UNKNOW_EXCEPTION.getMsg());
    }

}
